1、Developing alternatives to phosphate fertilizers of high water solubility
Field, glasshouse and laboratory work identified several sources of phosphate with low initial water solubility which were at least as effective as superphosphate, and which could be formulated and commercially produced as a practical alternative to superphosphate.
2、Thermo and pH
Adding K 2 SO 4 increases mechanical properties of the hydrogels. Treatment with 0.5% hydrogel considerably improves the water-holding and water-retention capacities of sandy soil. The 20-20-20 fertilizer release results revealed at that at 35 °C and a pH below 7, the hydrogel systems reduce the release rate of the fertilizer.
3、Water soluble phosphate fertilizers for crops grown in calcareous soils – an outdated paradigm for recycled phosphorus fertilizers?
The current paradigm for phosphorus (P) fertilizers applied to calcareous soil is that almost entirely water soluble P fertilizers are efficient and sparin
4、Production of a water
We performed solid-state fermentation by using Bacillus subtilis strain N-2 to produce a water-soluble fertilizer containing amino acids. Strain N-2 produced a high yield of protease, which transformed the proteins in soybean meal into peptide and free amino acids that were dissolved in the fermentation products.
Evaluation of the effects of irrigation and fertilization on tomato fruit yield and quality: a principal component analysis
To increase farmers’ incomes, the most effective way to save water and reduce fertilizer input is to improve the WUE and fertilizer partial factor productivity (PFP). PFP (the ratio of crop...
Fertilizer and Soil Solubility of Secondary P Sources—The Estimation of Their Applicability to Agricultural Soils
Standardized soil P tests, including the soil buffering capacity test and the Olsen, the Mehlich3, and water extraction methods, were employed together with standardized fertilizer P-solubility tests by neutral ammonium citrate and 2% citric acid extraction.
Role of Slow
Urea is one of the most important synthetic fertilizers worldwide due to its low cost and high N content. On the other hand, starch is a cheap, largely available and biodegradable natural...
Effect of Optimal Daily Fertigation on Migration of Water and Salt in Soil, Root Growth and Fruit Yield of Cucumber
Optimal daily fertigation (ODF): The total amounts of organic manure (basal fertilizer) and chemical fertilizer were the same as treatment OIF (Table 1), however, chemical fertilizer was applied automatically daily according to the actual water and nutrient requirement of the plants.
Water
To reduce the preparation cost of superabsorbent and improve the N release rate at the same time, a novel low-cost superabsorbent (SA) with the function of N slow release was prepared by chemical synthesis with neutralized acrylic acid (AA), urea, potassium persulfate (KPS), and N, N ’-methylenebis (acrylamide) (MBA).
Preparation and properties of chitosan
The optimized combination of slow release fertilizers and superabsorbent polymers may improve the nutrition of plants, mitigate the environmental impact from water-soluble fertilizers, reduce water evaporation losses, and lower the frequency of irrigation.
Water-soluble fertilizer, also known as water-soluble肥料or liquid fertilizer, is a type of nutrient solution applied directly to the plant root system via irrigation systems. Compared to traditional solid chemical fertilizers, water-soluble fertilizers offer advantages such as rapid dissolution, high absorption efficiency, and environmental friendliness. Selecting the appropriate model of water-soluble fertilizer requires considering multiple factors, including crop requirements, soil type, climate conditions, and cost-effectiveness. Below are some popular water-soluble fertilizer models and their characteristics:
1. Balanced Water-Soluble Fertilizer
(1) Features: This type typically contains nitrogen (N), phosphorus (P), potassium (K), and other microelements, suitable for most vegetables, fruit trees, and flowers. (2) Advantages: It meets basic nutritional needs for plant growth, offers high cost-effectiveness, and is ideal for large-scale application. (3) Disadvantages: The formula may need adjustments for specific crops or soil conditions.
2. All-Nutrient Water-Soluble Fertilizer
(1) Features: Includes all essential nutrients required for plant growth, such as N, P, K, and microelements. (2) Advantages: Provides comprehensive nutritional support, particularly suitable for crops requiring rapid growth. (3) Disadvantages: Higher price, which may not suit budget-limited farmers.
3. Slow-Release Water-Soluble Fertilizer
(1) Features: Certain components release nutrients slowly in the soil to meet plants' demands throughout their growth cycle. (2) Advantages: Reduces fertilization frequency, minimizes environmental pollution, and improves nutrient utilization efficiency. (3) Disadvantages: Higher cost, and effects may be less noticeable than fast-release fertilizers.
4. Biostimulant Water-Soluble Fertilizer
(1) Features: Contains natural plant extracts, such as amino acids and seaweed extracts, aimed at enhancing disease resistance and promoting growth. (2) Advantages: Environmentally friendly and safe, improving overall plant health. (3) Disadvantages: Effects may vary by crop and environmental conditions, and market recognition remains relatively low.
5. Controlled-Release Water-Soluble Fertilizer
(1) Features: Nutrients release gradually over time to align with the plant's growth rhythm. (2) Advantages: Provides stable, sustained nutrient supply and reduces fertilization frequency. (3) Disadvantages: Higher price and potential need for advanced irrigation systems for proper application.
6. Organic Water-Soluble Fertilizer
(1) Features: Derived from organic materials like animal manure or plant residues, free of synthetic chemicals. (2) Advantages: Eco-friendly, sustainable, and improves soil quality. (3) Disadvantages: Higher cost, which may not suit small-scale growers.
Key Factors to Consider When Choosing Water-Soluble Fertilizer:
- Crop Requirements: Different crops have varying nutritional needs; select fertilizers tailored to specific crops.
- Soil Conditions: Soil pH, organic matter, and salinity affect fertilizer effectiveness, so choose accordingly.
- Climate: Regional temperature, humidity, and rainfall influence crop growth and nutrient absorption.
- Budget: Prioritize cost-effective products based on financial constraints.
- Application Method: Ensure compatibility with local irrigation systems to achieve even distribution.
- Brand and Certification: Opt for reputable brands with certifications and test reports.
no single water-soluble fertilizer is universally "effective and affordable," as crop and farmer needs vary. It is recommended to conduct detailed research and trials based on specific circumstances. Consulting local agricultural extension services or experts can also provide tailored advice.
